Data Aire dap4 User Manual page 18

MENU B – SETPOINTS continued
Note: This screen is only shown when the fan is set to modulate to rack
temperature in factory settings menu.
Temp Setpoint: This fan temperature set point is used to control the fan speed
based on the Rack Air Temperature. The range of adjustment is 65 to 85 °F with a
default value of 72.0 °F.
Temp Deadband: This fan deadband is the amount that temperature must rise
above the fan speed setpoint before fan speed will begin to increase. The range of
adjustment is 1.0 to 5.0° with a default value of 2.0°.
Note: This screen is only shown when humidity control is set to "Dewpoint" in the
factory settings menu or if the Air-side Economizer feature is used.
Low Dewpoint Sp: This is the Low Dewpoint Setpoint. It sets the limit for when
humidification will begin. The range of adjustment is 30.0 to 55.0 °F with a default
value of 45.0 °F.
Low Dewpoint Db: This is the Low Dewpoint Deadband. It determines how much
above the setpoint that dewpoint must rise to end humidification. The range of
adjustment is 0.1 to 3.0 °F with a default value of 1.0 °F.
High Dewpoint Sp: This is the High Dewpoint Setpoint. It sets the limit for when
dehmidification will begin. The range of adjustment is 50.0 to 65.0 °F with a default
value of 59.0 °F.
High Dewpoint Db: This is the High Dewpoint Deadband. It is the amount that the
dewpoint must drop below setpoint before dehumidification ends. The range of
adjustment is 1.0 to 3.0 °F with a default value of 1.0 °F.
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